Malicious PDF — malware analysis report

Static analysis result for SHA-256 c881769db1fdbdb4…

MALICIOUS

PDF

26.4 KB Created: 2019-05-24 17:47:00 +01:00 Authoring application: mPDF 5.7
MD5: 2dd7b955d53db5ececa2b58f36d72923 SHA-1: bb14531ae36b53ec0a308ad155297987ccbef6fd SHA-256: c881769db1fdbdb468041dc45929c4951f643112c2909b0418c2933cee1cc516
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a malicious SEO or redirection scheme. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification. No scripts were extracted from this sample, and the document body was unreadable. The primary attack pattern involves leveraging numerous embedded URLs for potentially harmful redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://cefasfese.4pu.com/1731739736737738730/The-People-and-the-Books-18-Classics-of-Jewish-Literature-by-Adam-Kirsch.pdf
    • http://cefasfese.4pu.com/1731739736738732732/The-Woman-Who-Laughed-at-God-The-Untold-History-of-the-Jewish-People-by-Jonathan-Kirsch.pdf
    • http://cefasfese.4pu.com/8736736736731733/Jewish-Traditions-in-Early-Christian-Literature-Volume-5-the-Didache-Its-Jewish-Sources-and-Its-Place-in-Early-Judaism-and-Christianity-by-Botho-Walldorf.pdf
    • http://cefasfese.4pu.com/1731739736738732733/The-Global-Novel-Writing-the-World-in-the-21st-Century-by-Adam-Kirsch.pdf
    • http://cefasfese.4pu.com/1731739736738732739/The-Wounded-Surgeon-Confession-and-Transformation-in-Six-American-Poets-The-Poetry-of-Lowell-Bishop-Berryman-Jarrell-Schwartz-and-Plath-by-Adam-Kirsch.pdf
    • http://cefasfese.4pu.com/5730737733739732/Third-Solitudes-Tradition-and-Discontinuity-in-Jewish-Canadian-Literature-by-Michael-Greenstein.pdf
    • http://cefasfese.4pu.com/2739738734733737/Jurassic-Classics-The-Prehistoric-Masters-of-Literature-by-Saskia-Lacey.pdf
    • http://cefasfese.4pu.com/7730732737731739/Indian-Literature-and-Popular-Cinema-Recasting-Classics-by-Heidi-Pauwels.pdf
    • http://cefasfese.4pu.com/4739737737738735/Unknown-Masterpieces-Writers-Rediscover-Literature-s-Hidden-Classics-by-Edwin-Frank.pdf
    • http://cefasfese.4pu.com/1730739739735735731/Will-the-Jewish-People-Survive-by-Susser.pdf
    • http://cefasfese.4pu.com/6739739733737736/On-the-Nation-and-the-Jewish-People-by-Shlomo-Sand.pdf
    • http://cefasfese.4pu.com/2731735733736738/The-Cuckoo-Clock-and-The-Tapestry-Room-Classics-of-Children-s-Literature-1621-1932-by-Walter-Crane.pdf
    • http://cefasfese.4pu.com/7731734735738738/People-From-ywiec-County-People-From-ywiec-Wilhelm-Brasse-Tomasz-Adamek-Tadeusz-Pieronek-J-zef-Juraszek-lopek-Agata-Wr-bel-by-Books-LLC.pdf
    • http://cefasfese.4pu.com/3737735737736739/The-Secret-War-Against-the-Jews-How-Western-Espionage-Betrayed-The-Jewish-People-by-John-Loftus.pdf
    • http://cefasfese.4pu.com/1731739736738736732/The-Jung-Kirsch-Letters-The-Correspondence-of-C-G-Jung-and-James-Kirsch-by-Ann-Conrad-Lammers.pdf
    • http://cefasfese.4pu.com/1731731733731736738/The-Jewish-Press---A-Gevalt-from-the-Torah-True-An-Examination-of-the-Concepts-Holocaust-and-Israel-in-the-American-Jewish-Newspaper-the-Jewish-Press-by-Sahra-L-Lindeberg.pdf
    • http://cefasfese.4pu.com/4731735739737736/A-Short-History-of-the-Jewish-People-From-Legendary-Times-to-Modern-Statehood-by-Raymond-P-Scheindlin.pdf
    • http://cefasfese.4pu.com/1730737739730734738/The-War-of-the-Worlds-Falcon-Classics-The-50-Best-Classic-Books-Ever---46-by-H-G-Wells.pdf
    • http://cefasfese.4pu.com/4736733733739738/The-People-Next-Door-by-Henry-Adam.pdf
    • http://cefasfese.4pu.com/4736732736736738/A-Legacy-New-York-Review-Books-Classics-by-Sybille-Bedford.pdf
    • http://cefasfese.4pu.com/1731739736738732739/The-Wounded-Surgeon-Confession-and-Transformation-in-Six-American-Poets-The-Poetry-of-Lowell-Bishop-Berryman-Jarrell-Schwartz-and-Plath-by-Adam-Kirs